Media Komunikasi Teknik Sipil最新文献_第4页

Statistical Approach for Modeling the Stress – Strain Relationship of Concrete with the Recycled Concrete Aggregates 再生混凝土骨料混凝土应力应变关系的统计建模方法

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.40075

Namira Risza Pasya, Y. Idris, A. Abdullah

{"title":"Statistical Approach for Modeling the Stress – Strain Relationship of Concrete with the Recycled Concrete Aggregates","authors":"Namira Risza Pasya, Y. Idris, A. Abdullah","doi":"10.14710/mkts.v28i1.40075","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.40075","url":null,"abstract":"The use of recycled coarse aggregate (RCA) could be an alternative solution to the scarcity of natural aggregates as a concrete material and also the problem of construction waste. This paper aim is to analyze the model of compressive stress-strain curve of recycled aggregate concretes based on the literature review using the statistical approach. Database of existing experimental tests from different researchers consists 124 test specimens that come from 25 previous published journal articles. The specimens was selected based on the proportion of RCA mixtures that been used which are 50% and 100% of the concrete aggregates. This research was using simple linear regression analysis method with Statistical Package for The Social Sciences (SPSS) software. The data of the specimen analysis was differentiated into three stages of analysis, namely the analysis for the whole group data specimens, the group of concrete specimens without any additives, and specimens that use additives. The results show that the significant value from the data analysis was lower than 0.05, which are the limit values for significant value of the data analysis. This means that the water-cement ratio has the influence to the compressive strength of RCA concrete mix.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47792359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effectiveness of the Environmentally Friendly Pedestrian Bridge Prototype 环境友好型人行天桥原型的有效性

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.35741

Hendra Hendrawan

{"title":"The Effectiveness of the Environmentally Friendly Pedestrian Bridge Prototype","authors":"Hendra Hendrawan","doi":"10.14710/mkts.v28i1.35741","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.35741","url":null,"abstract":"Pedestrians are road users who are prone to accidents. Several studies related to the effectiveness of providing pedestrian bridges in Indonesia have shown a low level of utilization of pedestrian bridges. This study aims to determine the efficacy of providing an environmentally friendly pedestrian bridge prototype that was built by considering user needs from planning, design, and aesthetic criteria. Data were obtained through field surveys to get information on traffic conditions and bridge users and interviews to obtain information about crossing purposes and perceptions of needs. Statistical analysis of the average difference test was carried out to prevent bias in traffic conditions. Furthermore, descriptive statistical analysis was carried out to determine the effectiveness of providing pedestrian bridges obtained from comparing data processing results with the evaluation table. The results showed that the environmentally friendly Pedestrian Bridge prototype did not guarantee an increase in the number of users. Coercion through law enforcement and the installation of dividing lanes on the lanes can be seen as a solution. However, aesthetic and sustainable design is a necessity.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45392547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of Direct Runoff Values Between Numerical Model and Convolution of Synthetic Unit Hydrograph Method 综合单元线法卷积与数值模型直接径流量的比较

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.42309

Cleon Christopher, B. Ginting, D. Yudianto, Albert Wicaksono

{"title":"Comparison of Direct Runoff Values Between Numerical Model and Convolution of Synthetic Unit Hydrograph Method","authors":"Cleon Christopher, B. Ginting, D. Yudianto, Albert Wicaksono","doi":"10.14710/mkts.v28i1.42309","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.42309","url":null,"abstract":"This paper compares the results of direct runoff obtained by a numerical model of the shallow water equations (SWE) with the synthetic unit hydrograph (SUH) methods generally used in Indonesia. It is known that such SUH methods are still empirical, thus making it difficult for users to determine a representative method. Meanwhile, the hydrodynamic approach such as the SWE numerical model can achieve more accurate results in predicting the direct runoff compared to the SUH methods, because the model itself is derived mathematically based on the physical processes. The findings indicate that the direct runoff predicted using the SWE numerical model (HEC-RAS 5.0.7) produced more accurate results for the peak discharge with an average error of -0.07%, the peak time with an average error of 19.77%, and the shape of the hydrograph with the smallest Root Mean Square Error (RMSE) from all the cases tested. Therefore, it can be concluded that in the future the use of a hydrodynamic approach is highly recommended for the direct runoff prediction. This paper was also aimed to be used as a reference in the development of new, more accurate SUH method in the future.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47293765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical Model of Wind Flow around High-Rise Buildings Using RANS Standard k-ε on OpenFOAM 基于OpenFOAM RANS标准k-ε的高层建筑周围气流数值模型

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.37375

Y. Sanjaya, D. Priambodo, P. Sarli, H. Setio, Syariefatunnisa Syariefatunnisa

{"title":"Numerical Model of Wind Flow around High-Rise Buildings Using RANS Standard k-ε on OpenFOAM","authors":"Y. Sanjaya, D. Priambodo, P. Sarli, H. Setio, Syariefatunnisa Syariefatunnisa","doi":"10.14710/mkts.v28i1.37375","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.37375","url":null,"abstract":"Amplified wind loads around buildings could induce structural failure, thus making it important to understand the behavior of fluid flow between buildings. In this study, the analysis is performed using RANS, a computational fluid dynamics (CFD) simulation with faster computation time compared to other methods. OpenFOAM, an open-source software, is used to run the simulations. This study used a structured mesh with standard RANS k − ε turbulence model. Four symmetrical buildings with a scale of 1: 420 are used as the model of this study. Numerical modelling of different computational domain size and different degrees of fineness of the meshing is simulated to determine margin of errors. The result indicates that changes in computational domain has a significant effect on CFD analysis in lowering the error value in area with high flow speed ratio (U/U0> 1) to reach the acceptable error limit. Contrastingly, changes in the degree of fineness of the meshing do not give a significant change in error value. A relatively coarse meshing with fast computation time could give a similar result as A fine meshing model with longer computation time.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45021750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hierarchy of Obstacles to Application of Design Build Methods in Road Infrastructure Project Procurement : A Delphi Study 道路基础设施项目采购中设计-建造方法应用的障碍层次：德尔菲研究

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.32121

A. A. D. P. Dewi, B. Trigunarsyah

{"title":"Hierarchy of Obstacles to Application of Design Build Methods in Road Infrastructure Project Procurement : A Delphi Study","authors":"A. A. D. P. Dewi, B. Trigunarsyah","doi":"10.14710/mkts.v28i1.32121","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.32121","url":null,"abstract":"Currently the procurement of road infrastructure projects in Indonesia is mostly carried out using Design Bid Build (DBB), in which the project planning and construction processes are contracted separately. Although this method is well known in its implementation, the long procurement period often results in the slow procurement of infrastructure projects. As an alternative to the procurement method is the Design Build method. This method is believed providing many advantages compared to traditional methods. However, in practice there are obstacles that can hinder the application of this method. The purpose of this study is to analyze the herarchy of the obstacles to applying the Design Build method and formulate efforts to overcome these obstacles. A two-round paired matrix questionnaire survey using the Delphi technique was distributed to obtain consensus from the stakeholders involved in the infrastructure project procurement process. Subsequently, an Interpretive Structural Model (ISM) analysis is carried out to obtainthe hierarchy and the relationship between the constraints that can hinder the implementation of the Design Build method. Fourteen constraints were identified, which form a six-level framework that needs to be addressed in implementation.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42860288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Parameter Determination of the NRECA Model for Discharge in the Temef Watershed Temef流域NRECA流量模型的参数确定

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.42035

D. Krisnayanti, Chrystin Chandra, Wilhelmus Bunganaen, I. M. Udiana, A. C. Damayanti

引用次数: 0

Structural Stiffness Irregular Performance Using the DDBD and CSM Method 基于DDBD和CSM方法的结构刚度不规则性能

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.33629

Ika Nurelisa, A. Amalia

{"title":"Structural Stiffness Irregular Performance Using the DDBD and CSM Method","authors":"Ika Nurelisa, A. Amalia","doi":"10.14710/mkts.v28i1.33629","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.33629","url":null,"abstract":"The current earthquake-resistant building planning concept leads to a performance-based design concept. In this study, the direct displacement based design (DDBD) method was used to design the earthquake load and the capacity spectrum method (CSM) to determine the level of building performance using pushover analysis. The purpose of this study is to analyze and compare the performance of regular buildings with buildings that have irregular soft story stiffness. The building to be reviewed in this study consists of 3 variations of the building with a total of 8 floors. Variation A of regular buildings, Variation B of buildings with irregularity of soft story stiffness on the 1st floor, and Variation C of buildings with irregularity of soft story stiffness on the 5th floor. The maximum displacement value occurs in Variation C, the X direction is 0.281m and the Y direction is 0.304m. The mechanism for the occurrence of plastic joints in variations A, B, and C is in accordance with the strength column weak beam design concept. The earliest collapses occurred in Variation B buildings and the last occurred in Variation A buildings. Performance of variations A, B, and C structures using the CSM method was at the level of Damage Control.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42658150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Durability of Steel Reinforced Concrete Using Limestone, Sea Sand and Seawater in Concrete Mix 石灰石、海砂和海水混合混凝土对钢筋混凝土耐久性的影响

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.43380

D. Patah, A. Dasar, Amalia Nurdin

{"title":"Durability of Steel Reinforced Concrete Using Limestone, Sea Sand and Seawater in Concrete Mix","authors":"D. Patah, A. Dasar, Amalia Nurdin","doi":"10.14710/mkts.v28i1.43380","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.43380","url":null,"abstract":"Seawater and sea sand have potential used in concrete. The use of limestone in the concrete has been increasing due to benefits as aggregate include good strength and low possibility of alkali-silica reaction. Hence, it is imperative to exploit seawater, sea sand and limestone in concrete particularly corrosion issues follow it. This study aims to evaluate the effect of limestone, seawater, and sea-sand for mixing concrete on the corrosion of reinforcing bar. The specimen used in this study was a concrete block with strength design of 25 MPa and plain reinforcing bar with 10 mm in diameter was embedded. The result of half-cell potential (HCP) will be compared with the result of visual observations for actual corrosion after HCP readings indicates the specimens has been corroded. The results showed that reinforcing bar in all specimens mixed with seawater and using 100% limestone mixed with plain water using sea-sand is estimated to be corroded and corresponding with the actual corrosion. Further, it can be observed the use of washed sea-sand combine with 50% of limestone and mixed with seawater potentially increase the strength of concrete up to 50%, however, the risk of corrosion as well.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45980185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Permeable Paving Block System to Support the Water Sensitive Urban Design Concept in Kecamatan Bayat Kabupaten Klaten 支持Kecamatan Bayat Kabupaten Klaten水敏性城市设计理念的透水铺路砖系统

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.43103

D. Ulfiana, N. S. Ristianti, N. Bashit, Y. E. Windarto

{"title":"Permeable Paving Block System to Support the Water Sensitive Urban Design Concept in Kecamatan Bayat Kabupaten Klaten","authors":"D. Ulfiana, N. S. Ristianti, N. Bashit, Y. E. Windarto","doi":"10.14710/mkts.v28i1.43103","DOIUrl":"https://doi.org/10.14710/mkts.v28i1.43103","url":null,"abstract":"Flood and drought conditions due to the global crisis occurred in Bayat District, Klaten Regency. This is due to the rural characteristics of the area, where land has been converted from forest to agricultural land and settlements. This condition causes rainwater cannot infiltrate into the ground, thereby increasing runoff and reducing groundwater reserves. Therefore, the concept of Water Sensitive Urban Design (WSUD) is applied to this location to reduce the risk of water disasters. One of the WSUD technologies that can be applied is the permeable paving block system. This system can help infiltrate water to the ground thereby reducing runoff that causes flooding and storing water to replenish groundwater reserves. The design is planned in the pilot area of Jotangan and Krikilan Villages, Bayat District by applying a partial exfiltration pavement system. The structural design of the pavement layers is in the form of a permeable paving block with a compressive strength of 21.29 MPa with a thickness of 10 cm, a bedding layer of 6 cm, an open-graded base of 18 cm, and a drain pipe with a capacity of 3,78 mm/hour. The permeable paving block system in the WSUD pilot area can reduce runoff by 62.64%.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48105216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Soil Compaction in Building Construction Projects 建筑施工项目土壤压实评价

Media Komunikasi Teknik Sipil Pub Date : 2022-07-29 DOI: 10.14710/mkts.v28i1.32720

W. Diana, E. Hartono, A. Muntohar, Kartika Wulandary

引用次数: 0